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Introducing ICT systems
Information and communication technologies (ICTs) systems now dominate our everyday...
Information and communication technologies (ICTs) systems now dominate our everyday lives. This unit will explain what constitutes such a system and how ICT systems work. You will also look at how ICT systems convey, store and manipulate data, and how they process data. Finally you will learn how these systems are used.
This is what you should have achieved when you have completed your study of this unit:
- Know the meaning of all the terms highlighted in the text.
- Be aware of the main processes in an ICT system (sending, receiving, storing, retrieving, manipulating, conveying).
- Be aware of some of the hardware, software and communication components used in ICT systems.
- Use a system map or a block diagram to identify the components of an ICT system.
- Use the units for conveying data and those for storing data apporpriaterly, including use of the prefixes kilo, mega and giga.
- Learning outcomes
- 1 Describing an ICT system
- 2 Exploring systems
- 3 Communication systems
- 4 System components
- 5 The processes
- 6 Communication links
- Current section: 7 Describing an ICT system: conclusion
- 8 Computers
- 9 A stand-alone computer
- 10 Sending and receiving data
- 11 Manipulating data
- 12 Storing data
- 13 Different types of storage
- 14 Networked computers
- 15 Computers and communication systems working together
- 16 ICT systems in a supermarket
- 16.1 Introduction
- 16.2 Processes at the checkout
- 16.3 Networked computers in the supermarket checkout system
- 16.4 The network
- 16.5 The database server
- 16.6 Pricing and stock control
- 16.7 A loyalty card scheme
- 16.8 Linking data
- 16.9 Identity in an ICT system
- 17 Taking an overview of ICT systems
- 18 Electronic commerce
- 19 Conclusion
- Next steps
7 Describing an ICT system: conclusion
We have arrived at a model of a communication system that illustrates the processes needed for communication. We have also looked at the different kinds of communication link that can be used to convey data, and how to express the rates at which they can convey data. In sections 8–14, we shall be looking at a computer system as an example of an ICT system where data manipulation and storage are the most important features.
This is an extract from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Information and Communication Technologies course units or view the range of currently available OU Information and Communication Technologies courses.